EP0844687B1 - Electrical connection of two high-voltage plastic cables and a method of making such a connection - Google Patents

Electrical connection of two high-voltage plastic cables and a method of making such a connection Download PDF

Info

Publication number
EP0844687B1
EP0844687B1 EP19960402528 EP96402528A EP0844687B1 EP 0844687 B1 EP0844687 B1 EP 0844687B1 EP 19960402528 EP19960402528 EP 19960402528 EP 96402528 A EP96402528 A EP 96402528A EP 0844687 B1 EP0844687 B1 EP 0844687B1
Authority
EP
European Patent Office
Prior art keywords
matrix
press
electrical
electrical conductors
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19960402528
Other languages
German (de)
French (fr)
Other versions
EP0844687A1 (en
Inventor
Volker Dipl.-Ing. Aue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nexans SA
Original Assignee
Alcatel CIT SA
Alcatel SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Priority to EP19960402528 priority Critical patent/EP0844687B1/en
Publication of EP0844687A1 publication Critical patent/EP0844687A1/en
Application granted granted Critical
Publication of EP0844687B1 publication Critical patent/EP0844687B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/058Crimping mandrels
    • H01R43/0585Crimping mandrels for crimping apparatus with more than two radially actuated mandrels

Definitions

  • the invention relates to an electrical connection of two plastic insulated high voltage cables at the the two cables separated at their ends and hers electrical conductors are interconnected, as well over the junction of the electrical conductors Prefabricated connecting sleeve is arranged, or a Method of making an electrical connection of two plastic insulated high voltage cables, at which the two cables to be connected to each other Stepped ends and their electrical conductors together be connected, as well as over the connection point of the electrical conductor a prefabricated connecting sleeve is applied.
  • Prefabricated connecting sleeves for plastic insulated High-voltage cables consist of one or more hollow cylindrical molded bodies made of an elastomer Material such as B. a silicone rubber or a Ethylene propylene rubber, which over the Junction of the two electrical conductors be positioned.
  • the electrical Insulating properties of the prefabricated connecting sleeve must meet the same requirements as that Isolation of the cables to be connected.
  • a embedded conductive shielding of the conductor connection, cable-side field control profiles and a conductive outer Coating of the connecting sleeve ensures a uniform field distribution in the press fit on the Insulation of the two cable-fitting connecting sleeve.
  • connection arrangement for known electrical cables, one with a Insulated metal sleeve to hold the Head ends is provided.
  • the insulating sleeve is included their ends firmly on the insulation of the cable ends and has multiple openings between its two ends through which a stamp is passed, which the Radially deformed metal sleeve and thus a fixing and exact contacting of the conductor ends with the metal sleeve manufactures.
  • This connection arrangement is only for Low voltage cable suitable because the insulation of the Sleeve no conductive layers for field control having.
  • the compression of the compression sleeve and the electrical conductor with the help of through the Through holes of the die passed Press mandrels is also high precision and Reliability even under difficult conditions simple to do. Because of the reduced Installation time of the conductor connection according to the invention must the prefabricated connecting sleeve only via one comparatively short time in its expanded Parking position should be kept, so that a possible Damage or seizing of the connecting sleeve in this parking position is avoided.
  • the die also allows you to fill in the form between the Junction of the electrical conductors and the inner Wall of the connecting sleeve that was later pushed on formed cavity.
  • connection sleeve formed from electrical cavity Reasons and improve heat dissipation from the Completely fill out the connection point to the outside it is advantageous if the outer diameter of the die is at least about the same size as the diameter the insulation of the two cables.
  • FIG. 1 shows a first embodiment of a electrical connection according to the invention
  • FIG. 2 a section along the line II-II in Fig. 1
  • the Fig. 3 shows a sectional illustration of a second one Embodiment
  • Fig. 4 a third Embodiment of an electrical according to the invention Connection.
  • electrical connection 1 for connecting two single core plastic insulated high voltage cables 3 and 5 the two cables are connected to each other
  • ends in a first stage except for theirs electrical insulation 7 and 9 respectively, the outer structural elements and the outer field-delimiting Layer from the insulation of the two cable ends on the required length are removed.
  • ends in another stage is in an adjoining cylindrical Sections 8 and 10 each have part of the insulation 7 or 9 removed so that sections 8 and 10 a smaller outer diameter than insulation 7 and 9 exhibit.
  • the ends of the cables 3 and 5 except for their electrical conductors 11 and 13, respectively discontinued.
  • the tubular die 21 encloses in the axial direction the electrical connection 1, the compression sleeve 15 with the inserted ends to be joined together the electrical conductors 11 and 13 and with their two Ends 53 and 55 for example the cylindrical Sections 8 and 10 of the two cable ends, in which the Insulation 7 or 9 is partially removed. It stretches z. B. up to the front of the exposed Insulations 7 and 9.
  • the die 21 has for example the same outside diameter as that electrical insulation 7 and 9.
  • the inner diameter the tubular die 21 is, for. B.
  • the die 21 are in the longitudinal direction, for example four spaced locations z. B. each for example, six evenly over their circumference distributed through holes 33 formed, as in the Fig. 2 is shown.
  • the four digits are included Through holes 33 in the longitudinal direction of the Distributed die 21 provided that each of the electrical conductors 11 and 13 at two points each the compression sleeve 15 can be pressed.
  • Press mandrels 35 passed through such that the press sleeve 15th is pressed with the electrical conductor 11 or 13.
  • the die 21 is, for example Aluminum trained.
  • the second shown in Fig. 3 in section Embodiment differs from the first Embodiment essentially only by that in the die 21 only four at each point evenly distributed over the circumference of the die arranged through holes 33 are formed.
  • This embodiment is particularly suitable for multi-wire electrical conductors, the common design for smaller conductor cross sections.
  • anchors 41 and 43 between the die 21 and the insulation 7 and 9 of the two high-voltage cables 3 and 5 are provided.
  • In each of these grooves 49 and 51 protrudes in the assembled state of the die 21 the two ends 53 and 55 of the die, extending inward in the radial direction and for example, collar 57 or 59 formed all round.

Description

Die Erfindung betrifft eine elektrische Verbindung von zwei kunststoffisolierten Hochspannungskabeln, bei der die beiden Kabel an ihren Enden abgesetzt und ihre elektrischen Leiter miteinander verbunden sind, sowie über der Verbindungsstelle der elektrischen Leiter eine vorgefertigte Verbindungsmuffe angeordnet ist, bzw. ein Verfahren zum Herstellen einer elektrischen Verbindung von zwei kunststoffisolierten Hochspannungskabeln, bei dem die beiden Kabel an ihren miteinander zu verbindenden Enden abgesetzt und ihre elektrischen Leiter miteinander verbunden werden, sowie über der Verbindungsstelle der elektrischen Leiter eine vorgefertigte Verbindungsmuffe aufgebracht wird.The invention relates to an electrical connection of two plastic insulated high voltage cables at the the two cables separated at their ends and hers electrical conductors are interconnected, as well over the junction of the electrical conductors Prefabricated connecting sleeve is arranged, or a Method of making an electrical connection of two plastic insulated high voltage cables, at which the two cables to be connected to each other Stepped ends and their electrical conductors together be connected, as well as over the connection point of the electrical conductor a prefabricated connecting sleeve is applied.

Vorgefertigte Verbindungsmuffen für kunststoffisolierte Hochspannungskabel bestehen aus einem oder mehreren hohlzylindrischen Formkörpern aus einem elastomeren Werkstoff wie z. B. einem Silikon-Kautschuk oder einem Ethylen-Propylen-Kautschuk, die über der Verbindungsstelle der beiden elektrischen Leiter positioniert werden. Die elektrischen Isoliereigenschaften der vorgefertigten Verbindungsmuffe müssen dabei den gleichen Anforderungen genügen wie die Isolierung der miteinander zu verbindenden Kabel. Eine eingebettete leitfähige Abschirmung der Leiterverbindung, kabelseitige Feldsteuerprofile und eine leitfähige äußere Beschichtung der Verbindungsmuffe sorgen für eine gleichmäßige Feldverteilung in der im Preßsitz auf den Isolierungen der beiden Kabel sitzenden Verbindungsmuffe.Prefabricated connecting sleeves for plastic insulated High-voltage cables consist of one or more hollow cylindrical molded bodies made of an elastomer Material such as B. a silicone rubber or a Ethylene propylene rubber, which over the Junction of the two electrical conductors be positioned. The electrical Insulating properties of the prefabricated connecting sleeve must meet the same requirements as that Isolation of the cables to be connected. A embedded conductive shielding of the conductor connection, cable-side field control profiles and a conductive outer Coating of the connecting sleeve ensures a uniform field distribution in the press fit on the Insulation of the two cable-fitting connecting sleeve.

Eine elektrische Verbindung von zwei kunststoffisolierten Kabeln mit einer derartigen vorgefertigten Verbindungsmuffe ist in der EP 0 199 742 B1 beschrieben. Bei dieser bekannten elektrischen Verbindung werden die beiden elektrischen Leiter der zu verbindenden Kabelenden mittels Schweißung miteinander verbunden. Zum durchmessergleichen Ausfüllen zwischen den beiden Enden der Kabelisolierung wird ein längsgeteiltes metallisches Füllstück eingesetzt, das mit den beiden elektrischen Leitern elektrisch verbunden ist und das Hochspannungspotential an die leitfähige Abschirmung der später darüber aufgebrachten Verbindungsmuffe überträgt. Zum Ausfüllen des zwischen den elektrischen Leitern und der Innenkontur des Füllstückes gebildeten Hohlraumes sind zusätzliche Maßnahmen wie z. B. eine Bewicklung der elektrischen Leiter oder eine Ausfüllung des Hohlraumes mit einem Epoxydharz notwendig, um einen guten Wärmeübergang von den elektrischen Leitern auf den Körper der Verbindungsmuffe sicherzustellen. Jeweils ein umlaufender, in radialer Richtung nach innen weisender Kragen an jedem Ende des Füllstücks greift in eine korrespondierende Nut, die in das jeweilige Ende der Isolierung des Kabels eingeschnitten ist. Durch diese Verankerung soll ein im Laufe der Zeit auftretendes Schrumpfen der Kabelisolierung verhindert werden. Über der so hergestellten Verbindungsstelle der elektrischen Leiter wird dann eine vorgefertigte Verbindungsmuffe positioniert, die zuvor für die Dauer der Herstellung der Leiterverbindung entweder an einem Kabelende auf der entsprechend weit freigelegten Kabelader in eine Parkposition geschoben wurde oder auf einem zusätzlichen Trägerrohr über die Kabelader geschoben war.An electrical connection of two plastic insulated Cables with such a prefabricated Connection sleeve is described in EP 0 199 742 B1. In this known electrical connection two electrical conductors of the cable ends to be connected connected by welding. To the Filling with the same diameter between the two ends the cable insulation becomes a longitudinally divided metallic Filler used with the two electrical Conductors is electrically connected and that High voltage potential on the conductive shielding of the later transferred over this connecting sleeve. To fill in between the electrical conductors and the inner contour of the filler formed cavity are additional measures such. B. a winding of electrical conductor or a filling of the cavity with an epoxy resin necessary to get a good one Heat transfer from the electrical conductors to the body to ensure the connecting sleeve. One each circumferential, pointing inwards in the radial direction Collar at each end of the filler engages in one corresponding groove that in the respective end of the Insulation of the cable is cut. Through this Anchoring is said to occur over time Shrinkage of the cable insulation can be prevented. about the junction of the electrical The conductor then becomes a prefabricated connecting sleeve positioned previously for the duration of the manufacture of the Conductor connection either at one end of the cable on the correspondingly wide exposed cable core in a Parking position has been pushed or on an additional one Carrier tube was pushed over the cable core.

Die Verschweißung der beiden elektrischen Leiter ist insbesonderen bei großen Leiterquerschnitten von Mehrsegmentleitern schwierig und nur für zugentlastete elektrische Verbindungen geeignet. Darüber hinaus ist die Herstellung einer derartigen Leiterverschweißung sehr zeitaufwendig und bedarf höchster Sorgfalt. Um eine Beschädigung der vorgefertigten Verbindungsmuffe durch die überhöhte Aufweitung in der Parkposition entweder auf einer der Kabeladern selbst oder auf einem Trägerrohr zu vermeiden und ein vorzeitiges Festsaugen der Verbindungsmuffe in dieser Position zu verhindern, muß die Verweildauer der Verbindungsmuffe in ihrer Parkposition so kurz wie möglich gehalten werden.The welding of the two electrical conductors is especially with large conductor cross sections from Multi-segment ladders difficult and only for strain relief electrical connections suitable. In addition, the Production of such a conductor welding very much time-consuming and requires the greatest care. To one Damage to the prefabricated connecting sleeve the excessive expansion in the park position either on one of the cable wires itself or on a support tube avoid and premature seizure of the To prevent connection sleeve in this position the dwell time of the connecting sleeve in their Parking position should be kept as short as possible.

Aus der US-A-3 864 013 ist eine Verbindungsanordnung für elektrische Kabel bekannt, bei der eine mit einer Isolierhülse versehene Metallhülse zur Aufnahme der Leiterenden vorgesehen ist. Die Isolierhülse liegt mit ihren Enden fest auf der Isolierung der Kabelenden auf und weist zwischen ihren beiden Enden mehrere Öffnungen auf, durch welche ein Stempel geführt ist, welcher die Metallhülse radial verformt und damit eine Festlegung und exakte Kontaktierung der Leiterenden mit der Metallhülse herstellt. Diese Verbindungsanordnung ist nur für Niederspannungskabel geeignet, da die Isolierung der Hülse keine leitfähigen Schichten zur Feldsteuerung aufweist.From US-A-3 864 013 is a connection arrangement for known electrical cables, one with a Insulated metal sleeve to hold the Head ends is provided. The insulating sleeve is included their ends firmly on the insulation of the cable ends and has multiple openings between its two ends through which a stamp is passed, which the Radially deformed metal sleeve and thus a fixing and exact contacting of the conductor ends with the metal sleeve manufactures. This connection arrangement is only for Low voltage cable suitable because the insulation of the Sleeve no conductive layers for field control having.

Ausgehend von diesem Stand der Technik liegt der Erfindung daher das Problem zugrunde, die elektrischen Leiter von zwei kunststoffisolierten Hochspannungskabel auf möglichst einfache und schnelle Art und Weise miteinander zu verbinden und den Hohlraum zwischen der Verbindungsstelle der elektrischen Leiter und der inneren Wandung der abschließend darüber aufgeschobenen Verbindungsmuffe auszufüllen.Based on this state of the art Invention therefore addresses the problem of electrical Conductor of two plastic insulated high voltage cables in the simplest and fastest possible way connect with each other and the cavity between the Junction of the electrical conductors and the inner Wall of the finally pushed over it Fill in the connecting sleeve.

Dieses Problem wird durch die im Kennzeichen der Patentansprüche 1 bzw. 8 aufgeführten Merkmale gelöst. This problem is compounded by the Claims 1 and 8 listed features solved.

Die durch die Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß durch die Verwendung der Preßhülse eine einfache und schnell herstellbare elektrische Verbindung zwischen den elektrischen Leitern der beiden kunststoffisolierten Hochspannungskabel ermöglicht wird. Die Verpressung der Preßhülse und der elektrischen Leiter mit Hilfe von durch die Durchgangsbohrungen der Matrize hindurchgeführten Preßdornen ist darüber hinaus mit hoher Präzision und Zuverlässigkeit auch unter schwierigen Bedingungen auf einfache Weise durchführbar. Aufgrund der verringerten Montagezeit der erfindungsgemäßen Leiterverbindung muß die vorgefertigte Verbindungsmuffe nur über eine vergleichsweise kurze Zeit in ihrer aufgeweiteten Parkposition gehalten werden, so daß eine mögliche Beschädigung oder ein Festsaugen der Verbindungsmuffe in dieser Parkposition vermieden wird. Die Matrize ermöglicht darüber hinaus ein Ausfüllen des zwischen der Verbindungsstelle der elektrischen Leiter und der inneren Wandung der später aufgeschobenen Verbindungsmuffe gebildeten Hohlraumes.The advantages that can be achieved by the invention exist especially in that by using the Press sleeve a simple and quick to manufacture electrical connection between the electrical conductors of the two plastic-insulated high-voltage cables is made possible. The compression of the compression sleeve and the electrical conductor with the help of through the Through holes of the die passed Press mandrels is also high precision and Reliability even under difficult conditions simple to do. Because of the reduced Installation time of the conductor connection according to the invention must the prefabricated connecting sleeve only via one comparatively short time in its expanded Parking position should be kept, so that a possible Damage or seizing of the connecting sleeve in this parking position is avoided. The die also allows you to fill in the form between the Junction of the electrical conductors and the inner Wall of the connecting sleeve that was later pushed on formed cavity.

Für eine zuverlässige Leiterverbindung von elektrischen Leitern, die aus mehreren Segmenten bestehen, ist es von Vorteil, wenn die Preßhülse in Längsrichtung an zumindest einer Stelle durch jeweils vier oder sechs über ihren Umfang verteilte Verpressungen mit jedem elektrischen Leiter verbunden wird.For a reliable conductor connection of electrical It is made of ladders that consist of several segments Advantage if the compression sleeve at least in the longitudinal direction one place by four or six above theirs Scattered distributions with each electrical Conductor is connected.

Für eine besonders zuverlässige Leiterverbindung ist es von Vorteil, wenn die Verpressungen gleichmäßig über den Umfang der Preßhülse verteilt ausgebildet werden und wenn gleichzeitig durch jeweils zwei einander gegenüberliegende Durchgangsbohrungen der Matrize jeweils ein Preßdorn hindurchgeführt wird und die Preßhülse mittels der beiden Preßdorne mit dem elektrischen Leiter verpreßt wird.It is for a particularly reliable conductor connection an advantage if the pressings are even over the Circumference of the compression sleeve are formed and if simultaneously by two each other opposite through holes of the die in each case a mandrel is passed and the press sleeve by means of the two mandrels with the electrical conductor is pressed.

Aus dem gleichen Grund ist es ebenfalls vorteilhaft, wenn die Preßhülse durch die Matrize gegenüber den miteinander zu verbindenden elektrischen Leitern zentriert wird.For the same reason, it is also advantageous if the press sleeve through the die against each other centered to be connected electrical conductors.

Besonders vorteilhaft ist es, wenn an dem Ende der Isolierung jedes Kabels eine Nut derart ausgebildet wird, daß jeweils ein an den beiden Enden der Matrize ausgebildeter, sich in radialer Richtung nach innen erstreckender Kragen bei montierter Matrize in die entsprechende Nut ragt. Die auf diese Weise gebildete Verankerung der Matrize mit den Isolierungen der beiden Kabel gewährleistet, daß die Kabelenden, die elektrischen Leiter sowie die Preßhülse richtig zueinander positioniert sind. Zudem wird ein unter Umständen im Laufe der Zeit auftretendes Schrumpfen der Kabelisolierungen vermieden.It is particularly advantageous if at the end of the Insulation of each cable a groove is formed such that one at each end of the die more trained, moving inwards in the radial direction extending collar in the assembled die corresponding groove protrudes. The one formed in this way Anchoring the die with the insulation of the two Cable ensures that the cable ends, the electrical Conductor and the ferrule correctly to each other are positioned. In addition, a Shrinking of the Avoided cable insulation.

Um den zwischen der Verbindungsstelle und der inneren Wandung der später darüber angeordneten, vorgefertigten Verbindungsmuffe gebildeten Hohlraum aus elektrischen Gründen und zur Verbesserung der Wärmeabfuhr von der Verbindungsstelle nach außen vollständig auszufüllen, ist es von Vorteil, wenn der äußere Durchmesser der Matrize zumindest in etwa genauso groß ist wie der Durchmesser der Isolierungen der beiden Kabel.To the between the junction and the inner Wall of the prefabricated, later arranged above Connection sleeve formed from electrical cavity Reasons and improve heat dissipation from the Completely fill out the connection point to the outside it is advantageous if the outer diameter of the die is at least about the same size as the diameter the insulation of the two cables.

Drei Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen die Fig. 1 ein erstes Ausführungsbeispiel einer erfindungsgemäßen elektrischen Verbindung, die Fig. 2 einen Schnitt entlang der Linie II-II in Fig. 1, die Fig. 3 eine Schnittdarstellung eines zweiten Ausführungsbeispiels sowie die Fig. 4 ein drittes Ausführungsbeispiel einer erfindungsgemäßen elektrischen Verbindung.Three embodiments of the invention are in the Drawing simplified and shown in the following description explained in more detail. They show Fig. 1 shows a first embodiment of a electrical connection according to the invention, FIG. 2 a section along the line II-II in Fig. 1, the Fig. 3 shows a sectional illustration of a second one Embodiment and Fig. 4, a third Embodiment of an electrical according to the invention Connection.

Bei der in den Fig. 1 und 2 beispielhaft dargestellten elektrischen Verbindung 1 zum Verbinden von zwei einadrigen kunststoffisolierten Hochspannungskabeln 3 und 5 sind die beiden Kabel an ihren miteinander verbundenen Enden beispielsweise in einer ersten Stufe bis auf ihre elektrische Isolierung 7 bzw. 9 abgesetzt, wobei die äußeren Aufbauelemente und die äußere feldbegrenzende Schicht von der Isolierung der beiden Kabelenden auf der benötigten Länge entfernt sind. In einer weiteren Stufe ist in einem sich daran anschließenden zylindrischen Abschnitt 8 bzw. 10 jeweils ein Teil der Isolierung 7 bzw. 9 entfernt, so daß die Abschnitte 8 und 10 einen geringeren Außendurchmesser als die Isolierungen 7 und 9 aufweisen. Daran anschließend sind die Enden der Kabel 3 und 5 bis auf ihren elektrischen Leiter 11 bzw. 13 abgesetzt.In the example shown in FIGS. 1 and 2 electrical connection 1 for connecting two single core plastic insulated high voltage cables 3 and 5, the two cables are connected to each other For example, ends in a first stage except for theirs electrical insulation 7 and 9 respectively, the outer structural elements and the outer field-delimiting Layer from the insulation of the two cable ends on the required length are removed. In another stage is in an adjoining cylindrical Sections 8 and 10 each have part of the insulation 7 or 9 removed so that sections 8 and 10 a smaller outer diameter than insulation 7 and 9 exhibit. Following this are the ends of the cables 3 and 5 except for their electrical conductors 11 and 13, respectively discontinued.

Nachdem die beiden Enden der Hochspannungskabel 3 und 5 derart vorbereitet sind, wird eine nicht dargestellte vorgefertigte Verbindungsmuffe, die auch als Muffenkörper bezeichnet werden kann, in bekannter Weise auf einem der beiden Kabelenden in eine Parkposition gebracht. Nun werden die beiden Enden der elektrischen Leiter 11 und 13 in eine rohrförmige Preßhülse 15 eingeführt, die beispielsweise aus Kupfer besteht. Über dieser Preßhülse 15 wird eine längsgeteilte, beispielsweise aus zwei zusammengefügten Halbschalen 17 und 19 bestehende rohrförmige Matrize 21 angeordnet. Die beiden Halbschalen 17 und 19 werden bei großen Querschnitten der elektrischen Leiter 11 und 13 miteinander verschraubt, während bei kleineren Leiterquerschnitten eine Verstiftung der beiden Halbschalen 17, 19 ausreichend ist.After the two ends of the high voltage cables 3 and 5 are prepared in this way, one is not shown prefabricated connecting sleeve, also as a sleeve body can be referred to in a known manner on one of the brought both cable ends into a parking position. Now the two ends of the electrical conductors 11 and 13 inserted into a tubular press sleeve 15 which for example made of copper. Over this press sleeve 15 becomes a longitudinally divided, for example from two assembled half shells 17 and 19 existing tubular die 21 arranged. The two half shells 17 and 19 are used for large cross sections electrical conductors 11 and 13 screwed together, while with smaller conductor cross sections one Pinning of the two half-shells 17, 19 is sufficient is.

Die rohrförmige Matrize 21 umschließt in axialer Richtung der elektrischen Verbindung 1 die Preßhülse 15 mit den darin eingeschobenen, miteinander zu verbindenden Enden der elektrischen Leiter 11 und 13 und mit ihren beiden Enden 53 und 55 beispielsweise die zylindrischen Abschnitte 8 und 10 der beiden Kabelenden, in denen die Isolierung 7 bzw. 9 teilweise entfernt ist. Sie erstreckt sich z. B. bis an die Stirnseiten der freigelegten Isolierungen 7 und 9. Dabei weist die Matrize 21 beispielsweise den gleichen Außendurchmesser auf wie die elektrischen Isolierungen 7 und 9. Der innere Durchmesser der rohrförmigen Matrize 21 ist z. B. so gewählt, daß die Matrize 21 mit ihrer inneren Wandung 23 unmittelbar an dem Umfang der Preßhülse 15 sowie an ihren Enden 53 und 55 mit jeweils einem erweiterten zylindrischen Abschnitt 54 bzw. 56 an dem Umfang der zylindrischen Abschnitte 8 und 10 der beiden Kabelenden anliegt, so daß die Preßhülse 15 gegenüber den elektrischen Leitern 11 und 13 der Hochspannungskabel 3 und 5 zentriert ist. Dabei weist die Preßhülse 15 an ihrem Umfang beispielsweise an ihre jeweilige Stirnseite angrenzend jeweils einen geneigten Schrägabschnitt 25 bzw. 27 auf, der jeweils mit einem entsprechenden, zumindest in etwa den gleichen Neigungswinkel aufweisenden abgeschrägten Bereich 29 bzw. 31 der inneren Wandung 23 der Matrize 21 zusammenwirkt und zur exakten Zentrierung der Preßhülse 15 gegenüber den elektrischen Leitern 11 und 13 beiträgt.The tubular die 21 encloses in the axial direction the electrical connection 1, the compression sleeve 15 with the inserted ends to be joined together the electrical conductors 11 and 13 and with their two Ends 53 and 55 for example the cylindrical Sections 8 and 10 of the two cable ends, in which the Insulation 7 or 9 is partially removed. It stretches z. B. up to the front of the exposed Insulations 7 and 9. The die 21 has for example the same outside diameter as that electrical insulation 7 and 9. The inner diameter the tubular die 21 is, for. B. chosen so that the Die 21 with its inner wall 23 directly on the circumference of the compression sleeve 15 and at its ends 53 and 55 each with an enlarged cylindrical section 54 and 56 on the circumference of the cylindrical sections 8 and 10 of the two cable ends, so that the Press sleeve 15 relative to the electrical conductors 11 and 13 the high-voltage cable 3 and 5 is centered. It points the compression sleeve 15 on its circumference, for example, on their each end face is inclined Inclined section 25 or 27, each with a corresponding, at least roughly the same Inclined area 29 or inclined angle 31 of the inner wall 23 of the die 21 cooperates and for exact centering of the compression sleeve 15 opposite the electrical conductors 11 and 13 contributes.

In der Matrize 21 sind in Längsrichtung beispielsweise an vier voneinander beabstandeten Stellen z. B. jeweils sechs über ihren Umfang beispielsweise gleichmäßig verteilte Durchgangsbohrungen 33 ausgebildet, wie in der Fig. 2 dargestellt ist. Dabei sind die vier Stellen mit Durchgangsbohrungen 33 derart in Längsrichtung der Matrize 21 verteilt vorgesehen, daß jeder der elektrischen Leiter 11 und 13 an jeweils zwei Stellen mit der Preßhülse 15 verpreßt werden kann. Zur Verpressung der Preßhülse 15 mit den beiden elektrischen Leitern 11 und 13 werden gleichzeitig durch jeweils zwei einander gegenüberliegende Durchgangsbohrungen 33 der Matrize 21 Preßdorne 35 derart hindurchgeführt, daß die Preßhülse 15 mit dem elektrischen Leiter 11 bzw. 13 verpreßt wird. Dies wird für alle Durchgangsbohrungen 33 der Matrize 21 entsprechend durchgeführt, bis die Preßhülse 15 an allen vorgesehenen Stellen mit den beispielsweise aus einzelnen Segmenten ausgebildeten elektrischen Leitern 11 und 13 durch Verpressungen fest verbunden ist. Über der so hergestellten elektrischen Leiterverbindung kann dann durch Verschieben die nicht dargestellte vorgefertigte Verbindungsmuffe derart positioniert werden, daß sie die Matrize 21 vollständig und die freigelegten Isolierungen 7 und 9 an den Enden der beiden Kabel 3 und 5 in axialer Richtung zumindest teilweise umschließt.In the die 21 are in the longitudinal direction, for example four spaced locations z. B. each for example, six evenly over their circumference distributed through holes 33 formed, as in the Fig. 2 is shown. The four digits are included Through holes 33 in the longitudinal direction of the Distributed die 21 provided that each of the electrical conductors 11 and 13 at two points each the compression sleeve 15 can be pressed. For pressing the press sleeve 15 with the two electrical conductors 11 and 13 are simultaneously separated by two each opposite through bores 33 of the die 21 Press mandrels 35 passed through such that the press sleeve 15th is pressed with the electrical conductor 11 or 13. This is the case for all through bores 33 of the die 21 carried out accordingly until the compression sleeve 15 at all provided positions with, for example, from individual Segments formed electrical conductors 11 and 13th is firmly connected by pressing. About that electrical conductor connection can then be produced by moving the prefabricated, not shown Connection sleeve are positioned so that they the Matrix 21 completely and the exposed insulation 7 and 9 at the ends of the two cables 3 and 5 in axial Direction at least partially encloses.

Um eine gute Wärmeabfuhr von der Verbindungsstelle der beiden elektrischen Leiter 11 und 13 nach außen zu gewährleisten, ist die Matrize 21 beispielsweise aus Aluminium ausgebildet.To ensure good heat dissipation from the junction of the both electrical conductors 11 and 13 to the outside ensure, the die 21 is, for example Aluminum trained.

Das in der Fig. 3 im Schnitt dargestellte zweite Ausführungsbeispiel unterscheidet sich von dem ersten Ausführungsbeispiel im wesentlichen lediglich dadurch, daß in der Matrize 21 an jeder Stelle lediglich vier gleichmäßig über den Umfang der Matrize verteilt angeordnete Durchgangsbohrungen 33 ausgebildet sind. Dieses Ausführungsbeispiel eignet sich insbesondere für mehrdrähtige elektrische Leiter, die gängige Bauart für kleinere Leiterquerschnitte.The second shown in Fig. 3 in section Embodiment differs from the first Embodiment essentially only by that in the die 21 only four at each point evenly distributed over the circumference of the die arranged through holes 33 are formed. This embodiment is particularly suitable for multi-wire electrical conductors, the common design for smaller conductor cross sections.

Bei dem in der Fig. 4 dargestellten Ausführungsbeispiel sind Verankerungen 41 und 43 zwischen der Matrize 21 und den Isolierungen 7 und 9 der beiden Hochspannungskabel 3 und 5 vorgesehen. Zu diesem Zweck weist jeder der zylindrischen Abschnitte 8 und 10 der beiden Kabel 3 und 5, in denen ein Teil der jeweiligen Isolierung 7 bzw. 9 entfernt ist und die als Ende 45 bzw. 47 der entsprechenden Isolierung 7 bzw. 9 bezeichnet sein sollen, der Preßhülse 15 abgewandt jeweils eine z. B. ringförmige, sich in radialer Richtung nach innen erstreckende Nut 49 bzw. 51 auf. In jede dieser Nuten 49 und 51 ragt im montierten Zustand der Matrize 21 ein an den beiden Enden 53 und 55 der Matrize ausgebildeter, sich in radialer Richtung nach innen erstreckender und beispielsweise umlaufend ausgebildeter Kragen 57 bzw. 59. Mit Hilfe des jeweiligen Kragens 57 bzw. 59 wird die ringförmig stehen gebliebene Isolierung im Bereich der Abschnitte 8 und 10 umgriffen und so die Verankerung von Matrize 21 und Isolierung 7 des Kabels 3 sowie Isolierung 9 des Kabels 5 gewährleistet. Im übrigen unterscheidet sich dieses dritte Ausführungsbeispiel nicht wesentlich von dem in den Fig. 1 und 2 dargestellten ersten Ausführungsbeispiel.In the embodiment shown in FIG. 4 are anchors 41 and 43 between the die 21 and the insulation 7 and 9 of the two high-voltage cables 3 and 5 are provided. For this purpose, everyone who cylindrical sections 8 and 10 of the two cables 3 and 5, in which part of the respective insulation 7 or 9 is removed and the end 45 or 47 of the corresponding insulation 7 and 9 respectively should, the press sleeve 15 a z. B. ring-shaped, extending radially inwards extending groove 49 and 51 respectively. In each of these grooves 49 and 51 protrudes in the assembled state of the die 21 the two ends 53 and 55 of the die, extending inward in the radial direction and for example, collar 57 or 59 formed all round. With the help of the respective collar 57 or 59, the ring-shaped insulation in the area of the Sections 8 and 10 encompassed and thus the anchoring of Matrix 21 and insulation 7 of cable 3 as well as insulation 9 of the cable 5 guaranteed. Otherwise makes a difference this third embodiment is not essential of the first shown in Figs. 1 and 2 Embodiment.

Claims (12)

  1. An electrical connection of two plastic-insulated high-voltage cables where the two cables are striped back at their ends and their electrical conductors are connected with each other, and a prefabricated coupler surrounds the connecting site of the electrical conductors, characterized in that the electrical conductors (11, 13) are connected with a press sleeve (15), and a tubular matrix (21) consisting of a heat-conducting material with numerous penetrations (33) is over the press sleeve (15) to press the press sleeve (15) with the conductors (11, 13), and there are four or six penetrations (33) at at least two sites in the matrix (21) in a lengthwise direction distributed over the perimeter.
  2. An electrical connection according to claim 1, characterized in that the penetrations (33) are evenly distributed over the periphery of the matrix (21).
  3. An electrical connection according to one of claims 1 - 2, characterized in that the matrix (21) is divided lengthwise.
  4. An electrical connection according to one of claims 1 - 3, characterized in that the press sleeve (15) is centered by the matrix (21) against the electrical conductors (11,13).
  5. An electrical connection according to one of claims 1 - 4, characterized in that the outer diameter of the matrix (21) is at least as large as the diameter of the insulation (7,9) of the two cables (3,5).
  6. An electrical connection according to one of claims 1 - 5, characterized in that the two ends (53, 55) of the matrix (21) are anchored with the insulation (7,9) of the respective cable (3,5).
  7. An electrical connection according to claim 6, characterized in that the two ends (53,55) of the matrix (21) surround the insulation (7,9) of the respective cable (3,5), and the matrix has two collars (57,59) extending radially inward that extend into a corresponding groove (49,51) of the insulation (7,9).
  8. A process to create an electrical connection between two plastic-insulated high-voltage cables where the two cables at the ends to be connected are stripped, and their electrical conductors are to be connected, and a prefabricated connector is placed over the connecting site of the electrical conductors, characterized in that the electrical conductors (11,13) are connected with a press sleeve (15) in that a tubular matrix (21) consisting of a heat-conducting material with numerous penetrations (33) is over the press sleeve (15), and the press sleeve (15) is pressed with the electrical conductors (11, 13) by press pins (35) inserted through the penetrations (33) in the matrix (21), whereby the press sleeve (15) is pressed to each electrical conductor (11,13) at four or six press points at least at one site distributed over the perimeter in a lengthwise direction.
  9. A process according to claim 8, characterized in that the press points are evenly distributed over the perimeter of the press sleeve (15).
  10. A process according to one of claims 8 - 9, characterized in that a press pin (35) is inserted simultaneously through two opposing penetrations (33) in the matrix (21), and the press sleeve (15) is pressed with the two press pins (35) with the electrical conductors (11,13).
  11. A process according to one of claims 8 - 10, characterized in that the press sleeve (15) is centered by the matrix (21) in relation to the electrical conductors (11,13) to be connected.
  12. A process according to one of claims 8 - 11, characterized in that there is a groove in the ends (45,47) of the insulation (7,9) of each cable (3,5) so that a collar (57,59) extending radially inward at both ends (53,55) of the matrix (21) extends into the corresponding groove (49,51) when the matrix (21) is mounted.
EP19960402528 1996-11-25 1996-11-25 Electrical connection of two high-voltage plastic cables and a method of making such a connection Expired - Lifetime EP0844687B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19960402528 EP0844687B1 (en) 1996-11-25 1996-11-25 Electrical connection of two high-voltage plastic cables and a method of making such a connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19960402528 EP0844687B1 (en) 1996-11-25 1996-11-25 Electrical connection of two high-voltage plastic cables and a method of making such a connection

Publications (2)

Publication Number Publication Date
EP0844687A1 EP0844687A1 (en) 1998-05-27
EP0844687B1 true EP0844687B1 (en) 2001-05-16

Family

ID=8225320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960402528 Expired - Lifetime EP0844687B1 (en) 1996-11-25 1996-11-25 Electrical connection of two high-voltage plastic cables and a method of making such a connection

Country Status (1)

Country Link
EP (1) EP0844687B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE246412T1 (en) * 2000-05-26 2003-08-15 Nexans ARRANGEMENT FOR ELECTRICALLY CONDUCTIVELY CONNECTING THE CONDUCTORS OF TWO HIGH VOLTAGE CABLES
EP2360804B1 (en) * 2009-12-02 2016-05-18 Nexans Assembly for linking two energy cables

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097506B (en) * 1957-05-06 1961-01-19 Amp Inc Method and device for establishing an electrical connection
DE7328989U (en) * 1973-08-08 1973-11-08 K Pfisterer Elektrotechnische Spezialartikel Split press release or press release two clamps
US3864013A (en) * 1973-09-19 1975-02-04 Thomas & Betts Corp Pre-insulated connector for electrical conductors
IT1175762B (en) 1984-09-28 1987-07-15 Pirelli Cavi Spa EXTRUDED INSULATION CABLE JOINT
US4804344A (en) * 1987-07-16 1989-02-14 Kings Electronics Co., Inc. Cable connector and crimping tool therefor

Also Published As

Publication number Publication date
EP0844687A1 (en) 1998-05-27

Similar Documents

Publication Publication Date Title
DE2719851C3 (en) Monotube with lead-out electrically conductive wires and method for leading the wires out of the monotube
DE1575252C2 (en) Heat-shrinkable insulating sleeve
DE19634065B4 (en) Splicing device and method of making a splice for shielded cables
DD294376A5 (en) PLUG COUPLING FOR HIGH VOLTAGE PLUG CABLE
DE1089826B (en) Connection and branch piece for electrical lines
DE2132418C2 (en) Cable connector for high voltage cables
DE2841143C2 (en)
DE1918168C3 (en) Method of connecting two electrical cable conductors
DE3050661T1 (en)
EP3155694B1 (en) Device for contacting an electrical conductor
DE60302953T2 (en) Connector for two electrical power cables and connection with such a connector
WO2010034432A1 (en) Cable bushing element, and method for forming a cable bushing element
DE2331672A1 (en) CONNECTION FOR MULTI-WIRE BELT CABLES
EP1683235B1 (en) Connection between a coaxial cable and a connector and method for producing the same
EP0844687B1 (en) Electrical connection of two high-voltage plastic cables and a method of making such a connection
EP3300174A1 (en) Electrical connector
DE19523514B4 (en) Electrical connection of two plastic-insulated high-voltage cables and method for producing such a connection
DE2309156A1 (en) METHOD OF TENSILE CONNECTING TWO ROPE ENDS MADE FROM STRINGED STEEL WIRE
DE3725124A1 (en) Method for sheathing conductor connections in a manner which is waterproof and proof against water vapour
DE4432878C2 (en) Coaxial connector for a high voltage coaxial cable
DE3243690C2 (en) Contact device for a power supply system
DE3802435C2 (en)
DE102018222467A1 (en) Line arrangement with a liquid barrier
DE102017114365A1 (en) Method for producing a rod antenna
DE2613236C3 (en) Spark plug suppression plug

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19970906

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DK FI FR GB IT LI NL SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALCATEL

AKX Designation fees paid

Free format text: BE CH DK FI FR GB IT LI NL SE

RBV Designated contracting states (corrected)

Designated state(s): BE CH DK FI FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19990818

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DK FI FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010516

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010530

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: CABINET ROLAND NITHARDT CONSEILS EN PROPRIETE INDU

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: NEXANS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010816

NLS Nl: assignments of ep-patents

Owner name: NEXANS

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: NEXANS

ET Fr: translation filed
BECA Be: change of holder's address

Free format text: 20010516 *NEXANS:16 RUE DE MONCEAU, 75008 PARIS

BECH Be: change of holder

Free format text: 20010516 *NEXANS

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20021129

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20040601

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20051107

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20051108

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20051123

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20051129

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20060124

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061130

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20061130

Year of fee payment: 11

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20061125

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061125

BERE Be: lapsed

Owner name: *NEXANS

Effective date: 20061130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071125